Improvement in windmills



UNITED STATES PATENT OFFICE;

JOHN H. HEYSER, OF HAGERSTOVVN, MARYLAND.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent No. 57, 131, dated August14, 1866.

v clare that the following is a full and exact description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

The nature ot' my invention consists in exposing a sail in suoli mannerthat the Wind impinging on it will draw the slides over the wheel,thereby preventing the wind from acting on the whole of it, therebyequalizing the motion, the said slides 'having' weights or theirequivalents attached to them in such manner as to alter the power of thewheel.

To enable others skilled in the art to make and use my invention7 I willproceed t0 de- .scribe its construction.

a b c d are a sail; e eslides. fj'are weights attached to the slides e eby cords p p, the slides attached to the sails by the cords p p runningover pulleys g g g g. H H H H are fulcrnnis.

' When the sail is driven back the slides are drawn over the wheel ormill. can be so arranged as to regulate the power.

What I claim is- The sail a b c d, slides e e, cords p p, pulleys g g,and fulcrums H H, in combination with the wi iid-wheel, allconstructedand arranged as specified, and for the purposes substantially asdescribed and set-forth. y

JOHN H. HEYSER.

Witnesses GEO. W. BTERSHING, GEO. W. SMITH, Jr.

The weights Y

